Greg Pleasant - Prescribed Burning to Restore and Manage Native Grasses
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Transcript of Greg Pleasant - Prescribed Burning to Restore and Manage Native Grasses
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Prescribed Burning For Native Grasses
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Fire is a cost effective tool to manipulate vegetation
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Timing is Critical
• What is the growth stage of the desirable and target species.
• Winter dormant plants recover faster than drought-stressed plants.
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Selective suppression or promotion of a particular plant species depends primarily upon the date of the fire in relation to the phenology of the particular
species
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Usually, those species actively growing when the area is burned are much more susceptible to injury and death than dormant species or those
just initiating growth
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The proper time to burn can be based on physiological stages (e.g., root reserves) or morphological stages (e.g., when buds are exposed). A
sequence of fires may be necessary to restore grasslands to proper
condition.
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To control woody plant invasion
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Reclamation: • Vegetation Composition Shifts
Two Primary Types of Prescribed Burns
Maintenance:
• Production Increase • Suppression of Undesirable Species
• Mulch and Rough Removal
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Characteristics of a Reclamation Fire
• Hot, More Severe Fires • Usually Difficult to Control • Installed under Harsh Conditions • Risk of Damage to Desirable
Species
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Characteristics of a Maintenance Fire
• Relatively Cool • More Easily Controlled • Installed Under Moderate
Conditions • Less Risk of Damage To Desired
Species
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February 2011 Seabourne Creek
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February 11, 2011
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Feb 11, 2013
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12 days post burn, 2/23/11
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19 days post burn 3/2/11
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Feb 2013
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Species Diversity
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Burning under the right conditions is important first for safety then to accomplish your
objectives
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Factors That Determine a Fire’s Intensity
• Fuel quantity and continuity • Air temperature • Relative humidity • Wind speed • Soil moisture • Direction of flame front movement relative to
the wind
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Native Pasture
• Burned in fall to early winter • Controls woody growth and
removes summer grasses • Allows winter forbs and grasses
to make an early start
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Upland Woods
Burned December Through January Helps Restore
Browse Back Within Reach of Deer and Increases
Palatability
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Upland Woods
Repeated Every 3 to 5 Years Will Prevent Brush From
Becoming Too Dense With Low Quality Vegetation
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Some Terminology
• Mineral line • Black line • Fire line • Head fire • Back fire • Flank fire • Strip head fire
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The 40 - 60 Rule
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Ignition Patterns
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Ignition Patterns
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HOW TO BURN
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EQUIPMENT • Weather Kit • Drip Torch • Radios, Walkie-talkies • Diesel, Gas, Lighter • Flappers, rakes, ect… • Water sprayer (backpack, four-wheeler, truck
tank • Non flammable clothing, Nomex suits,
goggles, gloves, boots
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FLAPPER
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Portable Water Sprayers
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A General Maintenance Prescription
• Temp. Between 40 and 80 • Wind speed between 6 and 15 mph
and not pushing your smoke where it can cause problems
• Humidity between 20 and 60%
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Restore Historic Fire Regime
• Frequency
• Intensity
• Timing
• Landscape Level – Large Tracts
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Any Questions?